Roettger Computer Fundamentals for Technology February 23‚ 2014 The History of Personal Computers (Zimmermann) The personal computer in the beginning was not intended to be used for personal entertainment or for email‚ but was intended to be used for solving a number-crunching crisis. By 1880‚ the United States had grown so much that it took several years to calculate the United States census results. They were looking for a faster and more efficient way to get the results. The first computers were
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to perform operations on data.[1] Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits)‚ each of which is always in one of two definite states (0 or 1)‚ quantum computation uses qubits (quantum bits)‚ which can be in superpositionsof states. A theoretical model is the quantum Turing machine‚ also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic
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ELEMENTS OF COMPUTER SYSTEM Computer System Is a complete‚ working computer. The computer system includes not only the computer‚ but also any software and peripheral devices that are necessary to make the computer function. 1. Hardware 2.Software 3.Peopleware / Live ware HARDWARE It is best described as a device that is physically connected to your computer or something that can be physically touched. INPUT DEVICE –any device that allows the person to communicate information to the computer / gives
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Computer addiction is a mental illness which causes the excessive use of computers to the extent that it interferes with daily life. Excessive use may explain problems in social interaction‚ mood‚ personality‚ work ethic‚ relationships‚ thought processes‚ or sleep deprivation. The Diagnostic and Statistical Manual of Mental Disorders does not include a diagnosis for such a disease. The term ′computer addiction′ originated long before the Internet. Some people develop bad habits in their computer
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keyboard-8 bit Computer systems v Manual systems Benefits of computer system: Takes up less space Searching is very quick More than one person can access the same data form their network PC. The data stays in the computers memory Fewer staff are needed to look after a computer system Reports can be generated very quickly-automated Problems of a computer system: Setting up is very expensive Computer systems need people to maintain them POWER CUTS! It is easy to hack into a computer system.
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Why should animals not have the same rights that humans do? Maybe because they cannot talk‚ read books‚ or drive cars‚ but neither can some humans for that matter. So why is it that when an experiment‚ which was conducted to help treat type 2 diabetes‚ killed 203 people‚ it was halted immediately‚ although millions of animals die each year due to scientific experimentation? The answer is that many believe that animals are worthless or are not worth as much as human beings are‚ so they are therefore
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LECTURE 2 COMPUTERS ARE EVERYWHERE 1 – THIS LECTURE LOOKS AT A FEW SPECIFIC AREAS of SOCIETY AND WHERE COMPUTERS ARE USED » TRANSPORT » MEDICAL WORLD » AGRICULTURE » AIRLINE TRAVEL COMPUTERS ARE EVERYWHERE 2 Computers are everywhere. Our lives are directly affected when they do not operate. Computers have infiltrated our lives so we do not know how to function without them. INFORMATION AGE 3 We live in what we call the INFORMATION AGE – Evolving more
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Advantage Science gives us safe food‚ free from harmful bacteria‚ in clean containers or hygienic tins. It also teaches us to eat properly‚ indicating a diet balanced in protein and carbohydrate and containing vitamins. The results is freedom from disease and prolonged life. In pre-scientific days‚ food was monotonous and sometimes dangerous; today it is safe and varied. It is varied because through improved sea‚ land and air transport food can now be freely imported and exported. Science has also
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The Effects of Home Computers on Educational Outcomes: Evidence from a Field Experiment with Community College Students forthcoming Economic Journal Robert W. Fairlie University of California‚ Santa Cruz rfairlie@ucsc.edu Rebecca A. London Stanford University rlondon@stanford.edu July 2011 We thank the Community Technology Foundation of California (ZeroDivide)‚ UCACCORD‚ and Computers for Classrooms‚ Inc. for funding. We thank Hardik Bhatt‚ Jesse Catlin‚ Eric Deveraux‚ Oliver
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- Suresh Khanal Computer Networking Short Questions and Answer www.psexam.com Computer Networking Short Questions and Answers Suresh Khanal Kalanki‚ Kathmandu shkhanal@gmail.com shkhanal@yahoo.com Published By: http://www.psexam.com contact: info@psexam.com Computer Networking: Short Questions and Answers Published by PS Exam Kalanki‚ Kathmandu Nepal www.psexam.com Copyright ©2009 author. No part of this publication may be reproduced‚ stored in a retrieval system or transmitted
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